U. 3. WAS CEPT, TECHNICAL MANUAL 8-627 | 
DIATHERMY APPARATUS SHORT WAVE, COMPLETE, 
110 VOLT. 60 CYCLE, ITEM 7105505 mmi 
WAR DEPARTMENT TEINNICAl MANUAL 
DIATHERMY APPARATUS, 
SHORT WAVE, COMPLETE, 
110 VOLT, 60 CYCLE, 
ITEM 7105505 
WAR DEPARTMENT 
NOVEMBER 1944 WAR DEPARTMENT TECHNICAL MANUAL 
TM 8-627 
DIATHERMY APPARATUS, 
SHORT WAVE, COMPLETE, 
110 VOLT, 60 CYCLE, 
ITEM 7105505 
WAR DEPARTMENT 
N 0 EE M B E R 1944 
United States Government Printing Office 
Washington ■ 1944 WAR DEPARTMENT, 
Washington 25, D. C., 3 November, 1944. 
TM 8-627, Diathermy Apparatus, Short Wave, Complete, 110 Volt 
60 Cycle, Item 7105505, is published for the information and guidance of 
all concerned. 
[A. G. 300.7 (4 Oct 44).] 
By order of the Secretary of War: 
G. C. MARSHALL, 
Chief of Staff. 
Official : 
J. A. ULIO, 
Major General, 
The Adjutant General. 
Distribution : 
Armies (2) ; Corps (2) ; Dcpts (10) ; Sv C (5) ; ID 8 (4) ; IB 8 
(1); IR 8 (3) (2) (1) ; 1C 8 (2) ; Base Comds (5); Numbered 
Air Forces (5); Med Deps, Continental (25) except St. Louis 
Med Dcp (50), Med Sec ASF Dep (10), T of Opn (10); 
PE (2). 
ID 8: T/O & E 8-550. 
IB 8: T/O & E 8-611; 8-610. 
IR 8 (3) : T/O & E 8-581; 8-580, Evac Hosps. 
IR 8 (2) : T/O & E 8-560, 8-510; 8-590; 8-572S. 
IR 8 (1) : T/O & E 8-580, Gonval Hosps. 
IC 8: T/O & E 8-187, 8-667. 
For explanation of symbols, see FM 21-6. CONTENTS 
CHAPTER 1. INTRODUCTION. 
Section I. General. Paragraph Page 
Scope 1 1 
II. Description and data. 
Description 2 1 
Data 3 1 
CHAPTER 2. OPERATING INSTRUCTIONS. 
Section I. General. 
Scope 4 3 
II. Service upon receipt of equipment. 
Unpacking 5 3 
Assembling 6 3 
Conditioning rectifier tubes 7 7 
III. Controls and instruments. 
Controls 8 7 
Instruments 9 8 
IV. Operation. 
Procedure for operation 10 10 
CHAPTER 3. MAINTENANCE INSTRUCTIONS. 
Section I. General. 
. Scope . 11 11 
II. Lubrication. 
Blower motor 12 11 
III. Preventive maintenance services. 
Daily 13 11 
Three months 14 11 
IV. Trouble shooting. 
White pilot light not lit when main switch is turned on. . 15 11 
Plate current too high 16 11 
Heat not reaching patient but voltmeter registering. . . 17 12 
V. Maintenance operations. 
Dusting. . 18 12 
“Trimmer” adjustment 19 12 
Appendix. List of all service parts 15 CHAPTER 1 
INTRODUCTION 
Section I. GENERAL 
1. SCOPE, a. These instructions are published for the information and 
guidance of all personnel charged with the operation and maintenance of 
Diathermy Apparatus, Medical Department item No. 7105505 (fig. 1) in 
the field. They contain information on the operation and maintenance 
of the equipment with illustrations showing the various parts referred to 
in the instructions. They are arranged in three parts: Chapter 1—Intro- 
duction; Chapter 2—Operating Instructions; Chapter 3—Maintenance 
Instructions. 
b. A list of all service parts is included in the appendix. Those parts 
keyed with an asterisk are spare parts regularly stocked for issue. Those 
parts not keyed with an asterisk are available through special purchase 
only. 
Section II. DESCRIPTION AND DATA 
2. DESCRIPTION. The Burdick Model SWDX-80 Crystal Controlled 
Short Wave Diathermy supplies high frequency energy to either an in- 
ductance cable applicator, or a drum applicator, at a frequency of 13.660 
megacycles (approximately 22 meters). Frequency control devices within 
the unit actuated by a piezoelectric quartz crystal maintain the frequency 
within a band width of plus or minus 0.05 percent of 13.660 me, regard- 
less of how the controls are operated or the applications to patient are 
made. 
3. DATA. a. Performance. This machine is designed to operate on 
100-130 volt, 50-60 cycles, alternating current. 
b. Manufacturer. This machine is manufactured by The Burdick 
Corporation, Milton, Wisconsin. Med. Dept. 
No. Nomenclature 
I 7R08170 Screw, 1/4-20X3/4 Inch, Thumb, Brass. 
Figure 1. Item No. 7105505 Diathermy apparatus. CHAPTER 2 
OPERATING INSTRUCTIONS 
Section I. GENERAL 
4. SCOPE. The professional use of the Diathermy Apparatus is the re- 
sponsibility of the Medical Officer. However, chapter 2 contains in- 
formation on assembling and the mechanics of operating the equipment. 
Section II. SERVICE UPON RECEIPT OF EQUIPMENT 
5. UNPACKING. This unit is shipped in two cases, one of which contains 
the cabinet assembly and the other contains the arm, arm holder, treatment 
drum, cables and tubes. Open the case containing the cabinet and remove 
all supporting braces, screws and bolts. Remove packing materials and 
lift apparatus from the case. Open the other case to provide access to 
the contents. 
6. ASSEMBLING, a. Remove both front and rear doors of cabinet. 
Front door is removed by taking out the two knurled head screws, 
7R08170 (fig. 1), at bottom edge of door and pulling bottom of door out 
and down. Rear door is removed by taking out the 10 screws, SR00575 
(fig. 2), which hold it on. 
b. Carefully inspect the interior for parts loosened or broken in ship- 
ment. Remove all strings used to tie down tube connectors. 
c. Attach the arm holder, 7R08252 (figs. 2 and 3), to cabinet in the 
position shown in figure 3. Bfefore tightening the clamp, check the vertical 
position to be sure it registers with the notch in rear door. 
d. Install the following tubes; 
Two FP-265 final amplifiers, 7R08104 (see fig. 3). 
One GL-814 exciter amplifier, SR00061 (see fig. 4). 
One RCA-6-L6 Metal, oscillator, SR00062 (see fig. 4). 
One RCA-5Y3GT exciter power supply rectifier, SR00064 (fig. 4). 
Two RCA-866A high voltage supply rectifier, SR00063 (fig. 4). 
(1) Insert the FP-265 tubes, 7R08104 (fig. 3), in the sockets at either 
side of final amplifier tank. These tubes fit in the sockets located directly 
behind the shield plates, 7R08280 (see fig. 3). Carefully rotate the tubes 
so the tube base pins will register with the socket holes, then push tube 
down as far as it will go. Attach the plate clips, 7R08188 (fig. 3), on top 
caps of tubes. The clips should not be snapped into position from the 
side, but forced gently over the ends of top caps on tubes. These leads 
are very short and care must be exercised not to damage them or put a 
strain on the tank coil when placing the clips on the tube caps. Med. Dept. 
No. 
1. SR00426 
2. 7R08250 
3. SR00575 
Nomenclature 
Receptacle, Male, Twist Lock, Three 
Wire, Hubbell No. 7556. 
Plate, Cover, ‘‘Trimmer’’ Condenser. 
Screw, 6 32 XI/2-Inch, FL H. M. 
Med. Dept. 
No. 
4. 7R08148 
5. 7R08278 
6. 7R08252 
Nomenclature 
Drum, Treatment, Complete. 
Arm, Treatment Drum, Adjustable. 
Holder, Treatment Arm, Complete. 
4 
Figure 2. Rear View, Diathermy apparatus Med. Dept. 
No. 
1.7R08280 Plate, Shield. 
2.7R08104 Tube, Amplifier, High Mu Triode. 
3.7R08188 Clip, Plate, Amplifier Tube, Complete. 
4.7R08252 Holder, Treatment Arm, Complete. 
5. 7R08288 Cover, Relay. 
Nomenclature 
Figure 3. Interior view of rear section of Diathermy apparatus. 
614880—44—2 Med. Dept. 
No. 
1. SR00061 Tube, Amplifier, Beam Tetrode. 
2. SR00062 Tube, Oscillator, Beam Tetrode, Metal. 
3. 7R08102 Crystal, Quartz. 
4. SR00064 Tube, Rectifier. 
5. SR00063 Tube, Rectifier, Mercury. 
Nomenclature 
Figure 4. Interior view of front section of Diathermy apparatus, (2) The GL-814 tube is mounted horizontally in a socket on the shield 
wall of the exciter unit as shown in figure 4. Rotate the tube carefully to 
locate base pins before pushing tube into socket. Be sure to push the tube 
into socket as far as possible. Attach plate clip to the top cap on the 
tube, 
(3) Insert the RGA-6L6 tube in the socket at the extreme right rear 
of exciter unit as shown in figure 4. Rotate the tube carefully to locate 
base pins before pushing tube into socket. 
(4) Insert the RCA-5Y3GT tube in the socket on the exciter power 
supply unit, as shown in figure 4. Rotate the tube carefully to locate base 
pins before pushing tube into socket. 
(5) Insert the RCA-866A tubes in the two sockets between the exciter 
power supply unit and the plate transformer, as shown in figure 4. 
Rotate the tube carefully to locate base pins before pushing tube into 
socket. Attach the plate clips to the top caps of tubes. 
(6) Insert the MC-5 Bliley 6830 KG piezoelectric quartz crystal in the 
socket at the right front to exciter unit, as shown in figure 4. 
e. Replace both doors. 
f Attach the treatment drum, 7R08148 (fig. 2), and adjustable arm, 
7R08278 (fig. 2), and mount in the arm holder, 7R08252 (see figs. 
2 and 3). 
7. CONDITIONING RECTIFIER TUBES. When new 866-A mercury recti- 
fier tubes are first placed in operation, or tubes have been out of their 
sockets so the mercury has come in contact with either the filament or 
anode, the filaments should be operated at least 5 minutes with the plate 
voltage off. This is necessary in order to evaporate the mercury collected 
on the filament and anode, as otherwise the rectifier tubes will be damaged. 
To condition the rectifier tubes, start with oscillator switch in OFF posi- 
tion, turn on main switch, and turn voltage adjuster until pointer of 
voltmeter is in black area of scale. Allow filaments to run for at least 5 
minutes. After at least 5 minutes have elapsed, with power controls and 
resonance control on ZERO, turn oscillator switch on. The rectifier tubes 
should have a steady blue color. If there is sparking or flashing in the 
tubes, the preheating must continue until flashing stops. This can be 
observed through the vents in front door. After this conditioning treat- 
ment, the preheating time is automatically maintained at 15 seconds by 
the time delay relay. This delay is necessary to protect the 866-A mer- 
cury rectifier tubes from receiving plate voltage before the filaments have 
reached normal operating temperature. 
Section III. CONTROLS AND INSTRUMENTS 
8. CONTROLS, a. Main switch. The main switch, 7R08204 (fig. 5), 
turns on current to all tube filaments and exhaust blower. When the 
switch is in the ON position, the voltmeter is registering and the white pilot 
light, SR00071 (fig. 5), is lighted. The main switch is the circuit breaker 
type and takes the place of line fuses in addition to acting as the on-and- 
off switch. 
b. Oscillator switch. This switch, 7R08166 (fig. 5), turns on current 
to the oscillator and amplifier circuits and must be in the ON position 
before any energy can be produced by the machine. The RED pilot light 
should light up and the plate current milliammeter indicate when oscillator switch is ON. However, due to the time delay relay, when oscillator 
switch is turned ON, the RED pilot light will not light and the plate 
current milliammeter will not indicate until approximately 15 seconds 
after the main switch is turned ON. Whenever the RED pilot light is 
out when oscillator switch is ON, it is because the overload relay has 
tripped. This is reset and power restored by turning power control below 
ZERO to position marked RESET. 
c. Voltage adjuster. The voltage adjuster, 7R08282 (fig. 5), is a 
line voltage compensator by which variations in line voltage are adjusted 
to provide proper filament and plate voltage. This control and the volt- 
meter work in conjunction. Should the needle of the voltmeter fall below 
the black area, turn the voltage adjuster to a higher point. Should the 
reading be above the black area, turn the voltage adjuster to a lower 
point. Be sure to maintain the position of the needle in the black area 
as near the center arrow as possible, under all applications of the unit. 
Due to line voltage drop, it is usually necessary to turn up the voltage 
adjuster when treatment is started. 
d. Resonance control. This control, 7R08284 (fig. 5), tunes the out- 
put or patient circuit so that it resonates with the final amplifier, an oper- 
ation necessary to transfer energy to the patient. This control must always 
be adjusted to give maximum plate current, which is the indication of 
resonance. The position on the resonance control dial at which resonance 
occurs depends on the particular application given patient. This control 
does not act the same as the power control, because after resonance 
has been reached (maximum plate current) further increase of the 
resonance control causes a reduction in plate current. It is necessary to 
adjust resonance control for maximum plate current (resonance) in order 
for the plate current to be an indication of power output. 
e. Power control. This control, 7R08286 (fig. 5), is a variable mag- 
netic coupling of the output (patient) circuit to the final power amplifier, 
and provides a continuously variable control of the energy reaching the 
patient, indicated by the plate current millammeter. If the control is 
turned too high so the plate current exceeds 350 ma, an overload relay 
trips and shuts off power. Power is restored by turning power control 
down below ZERO to a position marked RESET. 
f. Patient’s emergency cut-off. This cord, 7R08176 (fig. 5), to be 
held by the patient, is attached to the oscillator switch and when pulled 
from any position it will open the switch. 
9. INSTRUMENTS, a. Voltmeter. The purpose of the voltmeter, 
7R08130 (fig. 5), is to indicate the voltage which is being supplied to the 
tube filaments and plates. Proper voltage is being supplied when the 
meter registers in the black area as near as possible to arrow in the center. 
This is necessary to the proper operation of the unit and to maintain 
normal tube life. Control is accomplished by use of the voltage adjuster 
explained in paragraph 8c. 
b. Plate current d-c milliammeter. This milliammeter, 7R08I32 (fig. 
5), indicates the d-c plate current and is directly proportionate to the 
radio frequency power which is being drawn from the oscillator by the 
patient circuit. In other words, this is an arbitrary guide to the amount 
of energy being generated. In order for the plate current to be a true 
indication of power output it is necessary that (1) the unit should operate 
long enough with power control and resonance control on ZERO to allow 
8 Figure 5. The control panel. 
Med. Dept. 
No. Nomenclature 
1 7R08282 Adjuster, Voltage. 
2 7R08204 Switch, Voltage Control, 
Complete. 
3 7R08130 Voltmeter, 3 1/2-Inch, 
Triplett. 
4 SR00071 Bulb, Pilot, 6-8 V, 
Miniature Screw 
Base. 
5 7R08286 Control, Power. 
6 SR00071 Bulb, Pilot, 6-8 V, 
Miniature Screw 
BBSS 
7 7R08132 Milliammeter, 3 1/2- 
Inch, Triplett. 
8 7R08176 Lever, Patient, Pull- 
Off, Complete. 
9 7R08166 Switch, Toggle, 
Oscillator. 
10 7R08284 Control, Resonance. 
9 plate current to reach a minimum value before starting treatment (2) 
resonance control must be tuned for maximum plate current during 
treatment. 
c. White pilot light. This light, SR00071 (fig. 5), indicates when main 
switch is ON and tube filaments and blower are operating. 
d. Red pilot light. This light, SR00071 (fig. 5), indicates when oscilla- 
tor switch is ON and unit is generating high frequency energy. If the red 
pilot is out when oscillator switch is ON, the indication is that the overload 
relay has tripped. 
Section IV. OPERATION 
10. PROCEDURE FOR OPERATION, a. See that the current supply is 
60-cycle (or 50-cycle) a-c of a voltage between 100 and 130 volts. 
b. The short wire extending from the wall outlet plug on line cable is 
to be connected to a good ground. If the building wiring has been in- 
stalled in properly grounded conduit and iron outlet boxes, it is sufficient 
to attach this ground lead to the outlet box by means of one of the screw 
plugs supplied with each unit. If the wiring is not in grounded conduit, 
it will be necessary to extend this ground lead to a water pipe, radiator or 
some other approved ground connection. This ground wire in the line 
cord connects to the steel cabinet when the line cable is plugged into cabi- 
net receptable. Grounding the cabinet is not essential to the proper func- 
tioning of the unit, but is a safety measure. It prevents any possible 
danger to patient and operator. 
c. See that both switches, “Main” and “Oscillator,” are in the OFF 
position. Turn Power Control and Resonance Control to ZERO. 
d. Plug line cable into the three-wire receptacle, SR00426 (fig. 2), on 
the right rear of cabinet near base. 
e. Turn on main switch and adjust voltage to upper range of black 
area on voltmeter scale. After about 15 seconds the time delay relay 
will click and oscillator switch can be turned on. 
f. Wait several minutes for the plate current to come down to its 
minimum value, (90 ma or less). This preheating period is necessary 
to allow the final amplifier to reach operating temperature. 
g. With the cable or drum applied to patient, and cable jacks plugged 
into outlets at rear of cabinet marked “Cable” (fig. 2) and after enough 
time has elapsed for plate current to reach a minimum value, the treat- 
ment can be started. 
h. Advance power control to about 1 or 2 and tune to resonance with 
resonance control. The exact resonance peak is indicated by maximum 
reading on the plate current milliammeter. Slowly adjust the resonance 
control to obtain maximum plate current. Rock the control back and 
forth to find the exact peak. If the resonance control is turned too fast, 
the resonance peak may be passed over unnoticed. 
i. Now with the circuit tuned to resonance, advance the power control 
to give the desired amount of energy to the patient, indicated (relatively) 
by the plate current. 
j. When the plate current exceeds 350 ma an overload relay trips and 
shuts off the high frequency power, indicated by the RED pilot light going 
out. The relay is reset and power restored by turning power control below 
ZERO to the position marked RESET. 
10 CHAPTER 3 
MAINTENANCE INSTRUCTIONS 
Section I. GENERAL 
11. SCOPE. Chapter 3 contains information for first and second echelon 
maintenance of The Short Wave Diathermy Apparatus. There are 
no organizational tools or equipment for use in conjunction with this 
equipment. 
Caution: NEVER remove doors of cabinet unless line cable is dis- 
connected from receptacle. This is a precautionary measure due to high 
voltage. 
Section II. LUBRICATION 
12. BLOWER MOTOR. The exhaust blower motor must be lubricated 
every 3 months with SAE No. 30 engine OIL (OE). Remove the four 
screws holding the blower panel to front of cabinet, as shown in figure 7. 
With one hand, hold the top of front door and bottom of blower panel, 
and tilt top of blower panel forward exposing oil holes in motor, which 
can be oiled with the other hand as shown in figure 6. 
Section III. PREVENTIVE MAINTENANCE SERVICES 
13. DAILY. Adjust4 ‘trimmer” if required. See paragraph 19. 
14. THREE MONTHS, a. Lubricate blower motor. See paragraph 12. 
b. Dust. See paragraph 18. 
Section IV. TROUBLE SHOOTING 
15. WHITE PILOT LIGHT NOT LIT WHEN MAIN SWITCH IS TURNED ON. 
Possible Cause 
Line fuse blown. 
Line cord broken or not 
plugged in. 
Pilot bulb burned out. 
Possible Remedy 
Replace line fuse. 
Replace or insert plug. 
Replace pilot bulb. 
16. PLATE CURRENT TOO HIGH. 
Possible Cause 
“Trimmer” out of adjust- 
ment. 
Possible Remedy 
Adjust “trimmer”. See para- 
graph 19. 17. HEAT NOT REACHING PATIENT BUT VOLTMETER REGISTERING 
Possible Cause 
Patient cable not plugged in. 
Possible Remedy 
Plug in patient cable. 
Section V. MAINTENANCE OPERATIONS 
18. DUSTING- Every 3 months, or oftener if necessary, the dust should 
be cleaned off of the parts inside of cabinet. The best way to do this is to 
remove both front and rear doors and use an electric hand blower, suction 
pressure apparatus, or compressed air. DO NOT wipe with a cloth as 
this will disturb parts that might be thrown out of adjustment. Be careful 
not to blow dust under dust cover, 7R08288 (fig. 3), on relay panel. 
Med. Dept. 
No. 
1 SR00107 Screw, 6-32 XI/2-Inch, R.H.M. 
Nomenclature 
Figure 6. Oil holes. 
19. “TRIMMER” ADJUSTMENT, a. If any of the following actions occur 
when the oscillator switch is turned on, the “trimmer” must be adjusted. 
(1) Plate current exceeds 150 ma. 
(2) Plate current does not reach a minimum of 90 ma or less, even 
after operating 10 minutes. 
(3) Plate current increases instead of decreases. 
b. “Trimmer” adjustment. With power control and resonance control 
on ZERO, and with nothing plugged in outlet panel, operate the unit 
12 with oscillator switch on for at least 10 minutes. Remove cover plate, 
7R08250 (see figs. 2 and 8), and loosen lock screw shown. Move the 
adjusting lever, 7R08190 (fig. 8), up or down very slightly and watch 
plate current milliammeter. The purpose of this adjustment is to tune 
the “trimmer” condenser for minimum plate current, and it has to be done 
very carefully by moving the lever very slowly. If the lever is moved too 
far, the plate current may exceed 350 ma and trip the overload relay. The 
current is restored by turning power control to RESET. Rock the lever, 
7R08190 (fig. 8), slowly up and down until the minimum plate current 
position is found, and then tighten the lock screw, SR00611 (fig. 8), and 
replace cover plate, 7R08250 (fig. 8). If the plate current exceeds 150 
ma, even after operating a few minutes, it is best to make a preliminary 
adjustment first and then wait 10 minutes for a final adjustment. 
Med. Dept. 
No. 
1 SR00107 Screw, 6-32 X 1/2-inch, R. H. M. 
Nomenclature 
Figure 7. Holes for oiling blower motor. 
c. If the “trimmer” adjustment has been made as outlined in paragraph 
19, and it is impossible to get a minimum plate current of 90 ma or less, 
cr if the overload relay opens the circuit whenever the oscillator switch 
is turned on, then it will be necessary to have the tubes and neutralization 
checked. 
d. If, sometime after the “trimmer” adjustment has been made, the no 
load plate current does not decrease to 90 ma or less in 4 minutes after 
turning on oscillator switch (with power control and resonance control 
on ZERO), then the adjustment must be repeated. Med. Dept. 
No. 
Med. Dept. 
No. 
Nomenclature 
Nomenclature 
1.7R08250 Plate, Cover, "Trimmer" Condenser. 
2. SR00611 Screw, 6 32 X 3/8-inch, Fill. H. M. 
3.7R08190 Lever, Adjustment, “Trimmer” 
Condenser, Complete. 
Figure 8. “Trimmer” adjustment. APPENDIX 
LIST OF ALL SERVICE PARTS 
O EM NO. 7105505 DIATHERMY APPARATUS, SHORT WAVE, COMPLETE, 
110 VOLT, 60 CYCLE 
Burdick Corporation 
Model No. SWDX-80 
Fig. 
No. 
Medical 
Dept. No. 
Nomenclature 
Unit 
Quan- 
tity 
SR 00003 
Common Parts 
Screw, 8-32 X R. H. M., 144topkg. Used 
pkg- 
— 
SR00010 
in resistor bank frame. 
Screw, 8-32 X %-inch, R. H. M., 144 to pkg, Used 
Pkg. 
* 
SR00015 
in various mountings. 
Screw, 8-32 X 1-inch, R. H. M., 144 to pkg. Used 
pkg. 
SR00017 
to secure FP 265 tube socket. 
Nut, 8 X 32, hex, 144 to pkg. Used in various 
Pkg. 
SR00040 
mountings. 
Screw, 6-32 X %-inch, R. H. M., 144 to pkg. 
pkg- 
* 
SR00042 
Used to secure bottom screen. 
Washer, screw size 6, 1 lb. pkg., 1300 washers. 
Pkg- 
* 
SR00043 
Used in various mountings. 
Nut, 6 X 32, hex, 144 to pkg. Used in various 
Pkg- 
*4 
SR00061 
mountings. 
Tube, amplifier, beam tetrode, GL—814 
ca. 
1 
*4— 
SR00062 
Tube, oscillator, beam tetrode, metal, 6L6 
ea. 
1 
*4 
SR00063 
Tube, rectifier, mercury, 866—A 
ea. 
2 
*4 
SR00064 
Tube, rectifier, 5Y3-GT 
ea. 
1 
*_ 
SR00065 
Resistor, 100-watt, 3000-ohms, wire-wound, vitre- 
ca. 
1 
*— 
SR00066 
ous enameled. 
Resistor, 25Twatt, 5000-ohms, wire-wound, vitre- 
ea. 
1 
* 
SR00067 
eous enameled. 
Resistor, 25-watt, 7000-ohms, wire-wound, vitre- 
ea. 
1 
* 
SR00068 
ous enameled. 
Resistor, 25-watt, 1500-ohms, wire-wound, vitre- 
ea. 
1 
*_ 
SR00069 
ous enameled. 
Resistor, 100-watt, 35000-ohms, wire-wound, vitre- 
ea. 
1 
* 
SR00070 
ous enameled. 
Resistor, 100-watt, 25000-ohms, wire-wound, vitre- 
ea. 
1 
*5 
SR00071 
ous enameled 
Bulb, pilot, 6—8 V., miniature screw base 
ca. 
2 
*— 
SR00105 
Screw 6-32 X %-mch, R. H. M., 144 to pkg. 
pkg. 
* 
SR00106 
Used in various mountings. 
Screw, 6—32 X R. H. M., 144 to pkg. 
Pkg- 
*6-A 
SR00107 
Used in various mountings. 
Screw, 6-32 X PJ-inch, R. H. M., 144 to pkg. Used 
Pkg- 
♦ 
SR00108 
in various mountings. 
Screw, 6-32 X %-inch, R. H. M., 144 to pkg. Used 
Pkg- 
See f 
1 in relay board and resistor mountings, 
ootnote at end of table. Fig. 
No. 
Medical 
Dept. No. 
Nomenclature 
Unit 
Quan- 
tity 
— 
SR00115 
Screw, 8-32 X %-inch, R. H. M., 144 to pkg. Used 
in frame clamps. 
Pkg- 
— 
SR00151 
Washer, lock, screw size 10, 1,000 to pkg. Used in 
blower mounting. 
Pkg- 
* 
SR00152 
Washer, lock, screw size 8, 1,000 to pkg. Used in 
various mountings. 
pkg. 
♦ 
SR00153 
Washer, lock, screw size, 6, 1,000 to pkg. Used in 
various mountings. 
Pkg- 
* 
SR00154 
Washer, lock, screw size 4, 1,000 to pkg. Used in 
meter mounting and power control. 
Pkg- 
— 
SR00156 
Washer, lock, screw size 5/iq, 1,000 to pkg. Used 
in various mountings. 
Pkg- 
' 
SR00226 
Screw, %-20 X % inch, R. H. M., 144 to pkg. Used 
in various mountings. 
Pkg- 
— 
SR00229 
Washer, lock, screw size %, 1,000 to pkg. Used to 
secure autotransformer. 
pkg. 
— 
SR00230 
Nut, % X 20, hex, 144 to pkg. Used to secure auto- 
transformer. 
Pkg- 
* 
SR00244 
Washer, screw size 4, 1 lb. pkg., 2,400 washers. 
Used in meter mounting and power control. 
Pkg- 
* 
SR00255 
Screw, 6-32 X inch, Phillips O. H. M., 144 to 
pkg. Used in treatment drum. 
Pkg- 
* 
SR00265 
Screw, 8-32 X %-inch, R. H. M., 144 to pkg. Used 
in various mountings. 
Pkg- 
SR00293 
Washer, screw size %, 1 lb. pkg., 144 washers. 
Used in autotransformer mounting. 
Pkg- 
* 
SR00304 
Washer, screw size 8, 1 lb. pkg., 1,300 washers. 
Used in various mountings. 
Pkg- 
— 
SR00316 
Plug, ground, male 
ea. 
1 
— 
SR00317 
Plug, ground, female 
ea. 
1 
— 
SR00324 
Screw, 8—32 X %-inch, FI. H. M., 144 to pkg. Used 
in top cabinet frame. 
Pkg- 
* 
SR00373 
Setscrew, 10-32 X %-inch, Bristo head, cup pt., 100 
to pkg. Used in plastic control knobs. 
pkg. 
*— 
SR00377 
Screw, 4-40 X inch, R. H. M., 144 to pkg. 
Used in meter mountings. 
Pkg- 
* 
SR00385 
Nut, 4 X 40, hex, 144 to pkg. Used in meter mount- 
ing and power control. 
Pkg- 
*— 
SR00391 
Setscrew, %-20 X %-inch, Allen head, cup pt., 
144 to pkg. Used in treatment drum. 
Pkg- 
* 
SR00414 
Screw, 4-40 X %-inch, R. FI. M., 144 to pkg. Used 
to secure cable on control pulley. 
Pkg- 
— 
SR00415 
Washer, screw size 8, fiber, 500 to pkg. Used in 
FP 265 tube socket mounting. 
Pkg- 
SR00416 
Screw, 10-24 X 1%-inch, R. H. M., 144 to pkg. 
Used in blower mounting. 
pkg. 
SR00417 
Nut, 10 X 24, hex, 144 to pkg. Used in blower 
mounting. 
Pkg- 
SR00418 
Screw, 4-40 X 6-inch, O. H. M., 144 to pkg. 
Used in shaft guide. 
Pkg- 
SR00419 
Screw, 7 X J4-inch, sheet metal, B. H., 144 to pkg. 
Used in front inner mounting panel. 
Pkg- 
SR00420 
Screw, 6-32 X 1%-inch, R. H. M., 144 to pkg. 
Used in 866—A tube socket mounting board. 
Pkg- 
SR00421 
Screw, Yie-18 X 1%-inch, hex H. M., 144 to pkg. 
Used to secure piste transformer. 
Pkg- 
See f( 
SR00422 
jotnote at en 
Nut, X 18, hex, 144 to pkg. Used in plate trans- 
former mounting. 
d of table. 
Pkg- Fig. 
No. 
Medical 
Dept. No. 
Nomenclature 
Unit 
Quan- 
tity 
— 
SR00423 
Cord, type “S”, hard service rubber, No. 14, three- 
conductor. 
ft. 
io y2 
— 
SR00424 
Plug, male, two-prong, rubber covered 
ea. 
i 
— 
SR00425 
Plug, female, twist lock, three-wire, Hubbell No. 
BC-11357. 
ea. 
i 
2 
SR00426 
Receptacle, male, twist lock, three-wire, Hubbell 
No. 7556. 
ea. 
i 
■ - 
SR00427 
Bracket, resistor, ohmite No. 12 
ea. 
12 
— 
SR00428 
Bracket, resistor, ohmite No. 26 
ea. 
2 
— 
SR00429 
Washer, screw size 6, fiber, 500 to pkg. Used in 
resistor mounting. 
Pkg- 
SR00430 
Screw, %6-18 X %-inch, hex head machine, 144 
to pkg. Used to secure base to cabinet. 
Pkg- 
— 
SR00437 
Screw, 10 X 1%-inch, R. H. Wood, 144 to pkg. 
Used to secure cable rack. 
Pkg- 
♦ 
SR00538 
Screw, 6—32 X %-inch, FI. H. M., 144 to pkg. 
Used to secure main switch. 
Pkg- 
*2 
SR00575 
Screw, 6-32 X FI. H. M., 144 to pkg. 
Used in rear panel and top. 
Pkg- 
* _ 
SR00576 
Screw, 4-40 X %6-inch, FI. H. M., 144 to pkg. 
Used to secure oscillator switch. 
Pkg- 
7 
SR00611 
Screw, 6-32 X %-inch, Fill. H. M., 144 to pkg. 
Used on “Trimmer” condenser. 
Uncommon Parts 
Pkg. 
*4 
7R08102 
Crystal, quartz 
ea. 
1 
*3 
7R08104 
Tube, amplifier, high mu triode 
ea. 
2 
* 
7R08106 
Resistor, 2-watt, 100,000-ohm 
Resistor, 2-watt, 400-ohm 
ea. 
1 
♦ 
7R08108 
ea. 
1 
* 
7R08110 
Capacitor, mica, 50-mf., 500-v 
1 
♦ 
7R08112 
Capacitor, mica, .005 mf, 500-v 
ea. 
3 
♦ 
7R08114 
Capacitor, mica, .05 mf, 500-v 
ea. 
1 
♦ 
7R08116 
Capacitor, mica, .03 mf, 1000-v 
ea. 
* 
7R08118 
Capacitor, mica, .005 mf, 2000-v 
ea. 
4 
♦ 
7R08120 
Capacitor, mica, .002 mf, 3000-v 
ea. 
1 
* 
7R08122 
Capacitor, paper, .1 mf, 200-v 
ea. 
2 
* 
7R08124 
Capacitor, paper, .1-1 mf, 200-v 
ea. 
2 
♦ 
7R08126 
Capacitor, electrolytic, 8-8-8-mf, 450-v 
ea. 
1 
♦ 
7R08128 
Capacitor, tubular, .1 mf, 600-v 
ea. 
2 
* 5 
7R08130 
Voltmeter, triplett 
ea. 
1 
* 5 
7R081.32 
Milliammeter, triplett 
ea.. 
1 
* 
7R08134 
Choke, iron core, Thordarson 
ea. 
1 
* 
7R08136 
Choke, radio frequency, RFC-1 
ea. 
1 
♦ 
7R08138 
Choke, radio frequency, RFC-2 
ea. 
1 
♦ 
7R08140 
Choke, radio frequency, RFC-3A-3B 
ea. 
1 
* 
7R08142 
Relay, complete: assembly 
ea. 
1 
♦ 
7R08144 
Breaker, circuit, main switch 
ea. 
1 
♦ 
7R08146 
Cable, treatment 
ea. 
1 
* 2 
7R08148 
Drum, treatment, complete. With cable less arm. . 
ea. 
1 
♦ 
7R08150 
Spacer, cable 
ea. 
1 
♦ 
7R08152 
Sleeve, cable, rubber 
ea. 
1 
♦ 
7R08154 
Cable, coupling coil pulley 
ea. 
1 
* 
7R08156 
ea. 
1 
* 
7R08158 
Tool, bulb, neon 
ea. 
0 
* 
7R08160 
Tool, screw driver, short 
ea. 
0 
♦ 
7R08162 
Tool, screw driver, long 
ea. 
0 
* 
See f 
7R08164 
ootnote at en 
Tool, clip and bulb 
d of table. 
ea. 
0 Fig. 
No. 
Medical 
Dept. No. 
Nomenclature 
Unit 
Quan- 
tity 
*5 
7R08166 
Switch, toggle, oscillator 
1 
1 
♦ 
7R08168 
Cover, treatment drum, plastic 
ca. 
*1 
7R08170 
Screw, %-20 X % inch, thumb, brass. Used to 
secure front panel. 
ea. 
2 
♦ 
7R08172 
Knob, round, plastic. Used for various controls. . 
ca. 
3 
* 
7R08174 
Spacer, metal. Used in patient pull off lever 
ea. 
1 
*5 
7R08176 
Lever, patient pull off, complete. With ball and 
cord. 
ea. 
1 
+ 
♦ 
7R08178 
7R08180 
Socket, screw, pilot bulb, complete. Assembly. . . . 
Insulator, mounting, hole, porcelain, com- 
plete. Assembly. 
ea 
ea. 
2 
♦ 
7R08182 
Insulator, %-inch hole, rubber 
ca. 
2 
♦ 
7R08184 
Board, terminal, autotransformer, complete. As- 
sembly. 
ea. 
1 
♦ 
7R08186 
Insulator, %-inch hole, rubber 
ca. 
1 
*3 
7R08188 
Clip, plate, amplifier tube, complete. Assembly. . 
Lever, adjustment, “Trimmer” condenser, com- 
plete. Assembly. 
Lock, “Trimmer” condenser adjustment lever, 
complete. Assembly. 
eg. 
2 
*7 
7R08190 
ea. 
1 
* 
7R08192 
ea. 
1 
* 
7R08194 
Board, terminal, relay, complete assembly 
ea. 
1 
— 
7R08196 
Resistor, 100-watt, 3,000-ohms 
ea. 
2 
— 
7R08198 
Transformer, plate high voltage power, supply. . . . 
ea. 
1 
— 
7R08200 
Autotransformer, 100-130-v., 50/60 cycles 
ea. 
1 
— 
7R08202 
Transformer, plate, low voltage power supply 
ca. 
1 
5 
7R08204 
Switch, voltage control, complete. Assembly 
ea. 
1 
— 
7R08206 
Socket, FP—265 tube 
ea. 
2 
— 
7R08208 
Socket, GL—814 tube 
ea. 
1 
— 
7R08210 
Socket, 6L6 tube 
ea. 
1 
— 
7R08212 
Socket, 5Y3-GT tube 
ea. 
1 
— 
7R08214 
Socket, 866—A tube 
ea. 
2 
— 
7R08216 
Socket, crystal 
ca. 
1 
— 
7R08218 
Blower, complete. Assembly 
ea. 
1 
— 
7R08220 
Panel, blower mounting, complete. Assembly. . . 
ca. 
1 
— 
7R08222 
insulator, felt, 1-inch wide, thick, 9 inches 
long. For blower mounting. 
ea. 
1 
— 
7R08224 
Insulator, felt, long, 1-inch wide, %-inch 
thick. For blower mounting. 
ea. 
1 
— 
7R08226 
Ventilator, blower, metal 
ea. 
1 
— 
7R08228 
Guide, shaft, control. Used on control shaft 
assemblies. 
ea. 
2 
— 
7R08230 
Strap, ground, woven, copper. 6 inches long.... 
Wire, glass insulated tips, woven copper cover, 
complete. With lamps. 
ca. 
1 
7R08232 
ea. 
1 
— 
7R08234 
Panel, patient electrode receptacle mounting, com- 
plete. Assembly. 
ea. 
1 
— 
7R08236 
Insulator, patient electrode receptacle, plastic 
ca. 
2 
7R08238 
Receptacle, patient electrode, complete. Assem- 
bly. 
ea. 
2 
— 
7R08240 
Frame, resistor bank mounting 
ea. 
1 
— 
7R08242 
Board, asbestos, resistor mounting 
ea. 
2 
7R08244 
Board, mounting FP-265 tube socket, complete. 
Assembly. 
ea. 
1 
— 
, 7R08246 
Panel, exciter power supply mounting, complete. . . 
ca. 
1 
— 
7R08248 
Connector, plastic. For blower motor leads 
Plate, cover, “Trimmer” condenser 
ea. 
2 
2-7 
7R08250 
ca. 
1 
2-3 
See f 
7R08252 
sotnote at en 
Holder, treatment arm, complete. Assembly 
d of table. 
ea. 
1 Fig. 
No. 
Medical 
Dept. No. 
Nomenclature 
Unit 
Quan- 
tity 
7R08254 
Panel, instrument, mounting-, complete. Assem- 
ea. 
1 
— 
7R08256 
bly. 
— 
7R08258 
Frame, top, cabinet 
ea. 
1 
Frame, tubular, metal 
ea. 
2 
— 
7R08260 
Clamp, tubular frame 
ea. 
16 
— 
7R08262 
Cabinet, metal, complete. Assembly 
ea. 
1 
— 
7R08264 
Base, metal, complete. Assembly 
ea. 
1 
— 
7R08266 
Panel, front, inner mounting 
ea. 
1 
— 
7R08268 
Cover, front, inner mounting panel 
ea. 
1 
— 
7R08270 
Panel, rear, inner mounting . 
ea. 
1 
— 
7R08272 
Screen, wire, bottom 
ea. 
1 
— 
7R08274 
Caster, swivel, 3-inch, complete. Assembly 
ea. 
4 
- — 
7R08276 
Rack, treatment cable 
ea. 
1 
2 
7R08278 
Arm, treatment drum, adjustable 
ea. 
1 
3 
7R08280 
Plate, shield 
ea. 
2 
5 
7R08282 
Adjuster, voltage 
ea. 
T 
5 
7R08284 
Control, resonance 
ea. 
1 
5 
7R08286 
Control, power 
ca. 
1 
3 
7R08288 
Cover, relay 
ea. 
1 
*— To be requisitioned, when required, from the supply depot. 
No asterisk indicates that the item is not stocked as a spare part, but can be obtained 
by special requisition. 
☆ U. S. GOVERNMENT PRINTING OFFICE: 1945—6S7664 TM2003